I am looking for a decent rear BUIS for my flat top and I nkow about the famed Knights and such, but I just do not want to spend $140 on a rear BUIS. If I have to then I must, but it is just that a backup, which many will now say, yeah it is a backup so dont scimp on the dough cause it could save your life...point taken. I have a Flat Top upper and have ordered the Flat top riser from Legal Transfers. If you all can point me to some other brands that are good. ( Now I do NOT want junk, just something a little cheaper than a A.R.M.S. or Knights. I just need the rear since I have the front flip up. Any ideas. Hopefully Pete will have something.

Well that is definately much better than the Knights I saw for around $140. I just could not justify that for what it was. I mean crap, I can get a whole carry handle for that If I wanted to. I will look into that one though. Thanks.

Yep, I think BMAS is your only other option.
I have one and it's nice. I got it used so it was really worth it.
If I was going to buy a new one I'd pay the extra 15 bucks for the ARMS. It's a really nice sight.